<template lang="html">
<div class="home-container">
  <el-row class="container">
    <el-col :span="24" class="header">
            <el-col :span="10" class="logo" :class="collapsed?'logo-collapse-width':'logo-width'">{{collapsed?'':sysName}}</el-col>
            <el-col :span="10">
        <div class="tools" @click.prevent="collapseFun">
          <i class="fa fa-align-justify"></i>
                </div>
            </el-col>
            <el-col :span="4" class="userinfo">
                <el-dropdown trigger="hover">
                    <span class="el-dropdown-link userinfo-inner">{{sysUserName}}</span>
                    <el-dropdown-menu slot="dropdown">
                        <el-dropdown-item>我的消息</el-dropdown-item>
                        <el-dropdown-item>设置</el-dropdown-item>
                        <el-dropdown-item divided @click.native="logoutFun">退出登录</el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>
            </el-col>
        </el-col>
    <el-col :span="24" class="main">
      <aside :class="collapsed?'menu-collapsed':'menu-expanded'">
        <!--导航菜单-->
       <el-menu :default-active="$route.path" class="el-menu-vertical-demo" unique-opened router v-show="!collapsed">
         <template v-for="(item,index) in $router.options.routes" v-if="!item.hidden">
           <el-submenu :index="index+''" v-if="!item.leaf">
             <template slot="title"><i :class="item.iconCls"></i>{{item.name}}</template>
             <el-menu-item v-for="child in item.children" :index="child.path" :key="child.path" v-if="!child.hidden">{{child.name}}</el-menu-item>
           </el-submenu>
           <el-menu-item v-if="item.leaf&&item.children.length>0" :index="item.children[0].path"><i :class="item.iconCls"></i>{{item.children[0].name}}</el-menu-item>
         </template>
       </el-menu>
       <!--导航菜单-折叠后-->
       <ul class="el-menu el-menu-vertical-demo collapsed" v-show="collapsed" ref="menuCollapsed">
         <li v-for="(item,index) in $router.options.routes" v-if="!item.hidden" class="el-submenu item">
           <template v-if="!item.leaf">
             <div class="el-submenu__title" style="padding-left: 20px;" @mouseover="showMenu(index,true)" @mouseout="showMenu(index,false)">
               <i :class="item.iconCls"></i>
             </div>
             <ul class="el-menu submenu" :class="'submenu-hook-'+index" @mouseover="showMenu(index,true)" @mouseout="showMenu(index,false)">
               <li v-for="child in item.children" v-if="!child.hidden" :key="child.path" class="el-menu-item" style="padding-left: 40px;height: 56px;line-height: 56px;" :class="$route.path==child.path?'is-active':''" @click="$router.push(child.path)">{{child.name}}</li>
             </ul>
           </template>
           <template v-else>
             <li class="el-submenu">
               <div class="el-submenu__title el-menu-item" style="padding-left: 20px;height: 56px;line-height: 56px;padding: 0 20px;" :class="$route.path==item.children[0].path?'is-active':''" @click="$router.push(item.children[0].path)"><i :class="item.iconCls"></i></div>
             </li>
           </template>
         </li>
       </ul>
     </aside>
     <section class="content-container">
       <div class="grid-content bg-purple-light">
         <el-col :span="24" class="breadcrumb-container">
           <strong class="title">{{$route.name}}</strong>
           <el-breadcrumb separator="/" class="breadcrumb-inner">
             <el-breadcrumb-item v-for="item in $route.matched" :key="item.path">{{ item.name }}</el-breadcrumb-item>
           </el-breadcrumb>
         </el-col>
         <el-col :span="24" class="content-wrapper">
           <transition name="fade" mode="out-in">
             <router-view></router-view>
           </transition>
         </el-col>
       </div>
     </section>
   </el-col>
 </el-row>
</div>
</template>

<script>
export default {
    components: {},
    data() {
        return {
            sysName: 'VueDemo',
            sysUserName: '',
            collapsed: false
        }
    },
    methods: {
        //折叠导航栏
        collapseFun: function() {
            this.collapsed = !this.collapsed;
        },
        showMenu(i, status){
          this.$refs.menuCollapsed.getElementsByClassName('submenu-hook-' + i)[0].style.display = status ? 'block' : 'none';
        },
        //退出登录
        logoutFun: function() {
            var _this = this;
            this.$confirm('确认退出吗?', '提示', {
                type: 'warning'
            }).then(() => {
                sessionStorage.removeItem('user');
                _this.$router.push('/login');
            }).catch(() => {

            });
        },
    },
    mounted() {
        var user = sessionStorage.getItem('user');
        if (user) {
            user = JSON.parse(user);
            this.sysUserName = user.username || '';
        }
    }
}
</script>

<style scoped lang="scss">
.container {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
    .header {
        height: 60px;
        line-height: 60px;
        background: #bbdbfb;
        color: #fff;
        .userinfo {
            text-align: right;
            padding-right: 35px;
            float: right;
            .userinfo-inner {
                cursor: pointer;
                color: #fff;
            }
        }
        .logo {
            height: 60px;
            font-size: 22px;
            padding-left: 20px;
            padding-right: 20px;
            border-color: rgba(238,241,146,0.3);
            border-right-width: 1px;
            border-right-style: solid;
        }
        .logo-width {
            width: 230px;
        }
        .logo-collapse-width {
            width: 60px;
        }
        .tools {
            padding: 0 23px;
            width: 14px;
            height: 60px;
            line-height: 60px;
            cursor: pointer;
        }
    }
    .main {
        display: flex;
        position: absolute;
        top: 60px;
        bottom: 0;
        overflow: hidden;
        aside {
            flex: 0 0 230px;
            width: 230px;
            .el-menu {
                height: 100%;
            }
            .collapsed {
                width: 60px;
                .item {
                    position: relative;
                }
                .submenu {
                    position: absolute;
                    top: 0;
                    left: 60px;
                    z-index: 99999;
                    height: auto;
                    display: none;
                }
            }
        }
        .menu-collapsed {
            flex: 0 0 60px;
            width: 60px;
        }
        .menu-expanded {
            flex: 0 0 230px;
            width: 230px;
        }
        .content-container {
            flex: 1;
            overflow-y: scroll;
            padding: 20px;
            .breadcrumb-container {
                .title {
                    width: 200px;
                    float: left;
                    color: #475669;
                }
                .breadcrumb-inner {
                    float: right;
                    //margin-top: 50px;
                }
            }
            .content-wrapper {
                background-color: #fff;
                box-sizing: border-box;
            }
        }
    }
}
</style>